CN101824864B - Manufacturing method of formwork mesh hollow wall - Google Patents

Abstract

The manufacturing method of formwork hollow wall is characterized in that: (1) preparing self-compacting concrete and fully mixing; (2) laying a layer of steel mesh; (3) setting vertical or oblique tensile steel bars on the steel mesh (4) Another layer of expanded metal is set at the other end of the tensioned reinforcing bar; (5) A support rod perpendicular to it is set between the expanded metal to support two layers of expanded metal to form a combined formwork structure; (6) Formwork support on both sides of the formwork structure; (7) Pouring the prepared self-compacting concrete in the formwork; (8) Disassembling the formwork after curing to obtain a formed formwork hollow wall structure. The mold-mesh combined casting structure can improve the strength of the product, and the manufactured product has the characteristics of reducing the cross-sectional size of the component, reducing the formwork, saving materials, convenient construction, short cycle, integrity, crack resistance and good earthquake resistance. Thereby the purpose of the present invention is achieved, and it is applicable to the use of various structural load-bearing walls, shear walls, special-shaped columns, dense steel bar structures, and the like.

Description

Manufacturing method of formwork hollow wall

(1) Technical field

The invention relates to a manufacturing method of a molded mesh hollow wall.

(2) Background technology

When building concrete structures, the traditional method is to use relatively set formwork to pour concrete in the volume defined by the formwork. When the concrete is solidified, the formwork is recycled, and the formwork no longer has any effect on the strength of the concrete structure.

At present, a kind of emperor-approved building formwork is a new type of building material imported from abroad. The formwork is directly produced in the factory according to the design requirements, and the concrete is poured after assembly on site. The strength of the concrete and the strength of the formwork The superposition constitutes the strength of the concrete member.

However, this kind of formwork structure is a dense structure, and the concrete cannot be poured densely, and it is even more inconvenient to vibrate. Therefore, the internal structure of the building structure using formwork is not stable, and it cannot be well exerted only by relying on formwork. Therefore, it is urgent to develop a novel method for making molded mesh hollow walls.

(3) Contents of the invention

The purpose of the present invention is to provide a method for making formwork hollow walls, which is simple, fast and convenient, and the obtained product has the advantages of reducing the cross-sectional size of components, reducing formwork, saving materials, convenient construction, short cycle, integrity and crack resistance and good shock resistance.

The solution of the present invention is on the basis of prior art, the manufacture method of formwork hollow wall, it is characterized in that: (1) prepare self-compacting concrete, fully stir; (2) lay one deck steel mesh; (3) in Set up steel bars perpendicular to it or obliquely on the steel plate; (4) set another layer of steel mesh at the other end of the steel bar; (5) set a support bar perpendicular to it between the steel mesh The steel mesh forms a combined formwork structure; (6) support the formwork on both sides of the combined formwork structure; (7) pour the prepared self-compacting concrete in the formwork; (8) disassemble the formwork after curing to obtain the formed formwork hollow wall structure. In this way, the use of self-compacting concrete can ensure that the concrete is well compacted and effectively improve production efficiency. Since no vibration is required, the time required for concrete pouring is greatly shortened, the labor intensity of workers is greatly reduced, and the number of workers required is reduced. Improve the working environment and safety, no vibrating noise, avoid arm vibration syndrome caused by workers holding the vibrator for a long time, improve the surface quality of concrete, no surface air bubbles or honeycomb pitting, no need for surface repair, can be realistic It presents the texture or shape of the surface of the formwork, which increases the freedom of structural design, does not require vibration, and can be poured into structures with complex shapes, thin walls and dense reinforcement, avoiding the wear and tear on the formwork caused by vibration, and reducing the impact of concrete on the mixer. The wear and tear of the project can reduce the overall cost of the project, and reduce costs from many aspects such as increasing construction speed, environmental noise restrictions, reducing labor and ensuring quality. Well, self-compacting concrete can easily pass through steel mesh, and can be well combined with steel mesh to form a combined concrete formwork structure, and the concrete structure will not crack, and it can assist the overall structure of the building to carry the load. Play a certain load-bearing role, have obvious environmental benefits, economic benefits and social benefits, especially can effectively strengthen the compressive strength, density, split tensile strength, flexural strength and elastic modulus and other indexes, and the production is simple and fast , Convenience, it can be molded once, twice or multiple times according to the needs; and the mold-net combined casting structure can improve the strength of the product, and the obtained product has the advantages of reducing the cross-sectional size of the component, reducing the supporting mold, Material saving, convenient construction, short period, integrity, good crack resistance and earthquake resistance, etc., thus achieving the purpose of the present invention, suitable for various structural load-bearing walls, shear walls, special-shaped columns, dense steel bars The use of structures, etc., is especially suitable for continuous pouring of various large-volume, high-density, long-span, dense steel bars, and special-shaped building structural components.

The present invention also lies in adding a step after step (1): (a) hanging at least one modular component on the steel plate, followed by steps (2)-(6). In this way, the inner void ratio of the concrete structure is increased, the amount of concrete is saved, and thus the cost is saved, and the module components can also withstand certain external forces, and various connectors, positioning pieces, supporting pieces, and hanging pieces can also be pre-embedded on the formwork. , pipelines and other auxiliary structures, and hollow or solid mandrels of different materials can enhance the mechanical performance, fire and heat insulation performance, waterproof performance, crack resistance and so on of the concrete structure.

The present invention also lies in that said modular component is an open hollow tube, a closed hollow tube, a bamboo tube, a solid tube, an open box, a closed box or a solid block. In this way, according to the needs of design and construction and the needs of the application environment, local materials can be obtained, so as to realize the functions of the components to the greatest extent, meet various special structural requirements such as sound insulation, heat insulation, heat preservation, and load bearing, and save energy to the greatest extent. cost.

The present invention also lies in that the surface of the expanded metal mesh is wavy, broken line or curved. In this way, different types of steel mesh can be used according to various construction needs and production environments, which has met the needs of construction design, and the combination of wavy, broken line or curved surface shape with concrete can form a more stable structure.

The present invention also lies in that the bending part of the corrugated, broken line or curved steel mesh is provided with reinforcing ribs. In this way, since the bending parts are all weak areas, arranging reinforcing ribs in these weak areas can increase the strength of these weak areas and improve the stability of the overall structure.

The invention also lies in that the composite structure of self-compacting concrete building formwork and mesh includes at least two layers of steel mesh. In this way, because of the use of self-compacting concrete, this kind of concrete has good fluidity, filling, segregation resistance, and compactness. According to the needs of construction design, two or more expanded metal meshes can be flexibly arranged in close proximity or at intervals. Concrete structures with different thicknesses and different strength standards can be formed, and the impact resistance can be effectively improved.

The present invention also lies in the arrangement of the steel mesh at intervals. In this way, the interval size of the steel mesh can be adjusted according to the needs of construction design to form concrete structures with different thicknesses and sizes, and concrete structures with different thicknesses and different strength standards can be formed, and the impact resistance can be effectively improved.

The present invention also lies in that the distance between the expanded metal meshes is ≤350mm. In this way, a structure with a relatively large thickness can be formed, which can meet the needs of various large-scale special-shaped structures, high-rise structures, exterior walls and load-bearing walls, etc., and can easily control the thickness, which can facilitate construction, speed up the construction process, and shorten construction. cycle.

The present invention also lies in that the distance between the expanded metal meshes is ≤100mm. In this way, a structure with a relatively small thickness can be formed, which can meet the needs of various small special-shaped structures, exterior walls and load-bearing walls, etc., and can easily control the thickness, facilitate construction, speed up the construction process, and shorten the construction period.

The present invention also lies in that at least two expanded metal meshes are connected as a whole through the positioning connection device thereon. In this way, the distance between the expanded metals can be effectively controlled, and some auxiliary structures can be fixed between the expanded metals, such as fixed mandrels, pipelines, wire boxes, etc., so as to solve the procedures for subsequent installation of these auxiliary components and save costs.

The invention also lies in that the expanded metal mesh is bent into an angle of 45°-90°. In this way, concrete structures with different angles can be produced according to the needs of construction design, and special-shaped structures can be easily produced.

The present invention also lies in that the expanded metal is a curved expanded metal. In this way, it can be well applied to making curved structures such as special-shaped columns and curved walls, meeting the needs of various special-shaped structures, and solving a major technical gap that is difficult to construct in current special-shaped structures.

The present invention also lies in that the composite structure of concrete building formwork and mesh is provided with multiple layers of arc-shaped steel mesh arranged closely or at intervals. In this way, it can be well applied to the production of curved structures such as special-shaped columns and curved walls, to meet the needs of various special-shaped structures, and to solve a major technical gap that is difficult to construct in current special-shaped structures, and multi-layer curved steel mesh can be formed The higher-strength formwork concrete structure can be applied to building structures with large bearing capacity.

The invention also lies in that the surface of the self-compacting concrete building formwork net combination structure is provided with a lightweight composite board. In this way, the water resistance and corrosion resistance of the overall structure can be effectively improved, and the outer surface can be easily decorated, thereby saving subsequent construction procedures, reducing construction time, and saving costs.

The invention also lies in that the lightweight composite board is fiber cement board, barbed wire cement board, plastic board, fireproof board, lightweight lime board or cement mortar layer. In this way, according to the needs of design and construction, in order to achieve specific purposes such as specific fire prevention, temperature insulation, heat insulation, decoration and other specific environments, different lightweight composite panels can be used to meet the requirements. will be greatly improved.

The present invention is also characterized in that the self-compacting concrete includes 100 parts of cement; 60-100 parts of fly ash; 20-50 parts of broken porcelain particles, 100-200 parts of gravel, and 1-5 parts of polycarboxylate superplasticizer , 0.001-0.08 parts of tackifier, 0.001-0.1 part of defoamer, 280-360 parts of machine-made sand and 0.4-1 part of superplasticizer. In this way, the concrete can be well compacted and the production efficiency can be effectively improved. Since no vibration is required, the time required for concrete pouring is greatly shortened, the labor intensity of workers is greatly reduced, and the number of workers required can be reduced, which can greatly improve the working environment and safety. High performance, no vibration noise, avoid arm vibration syndrome caused by workers holding the vibrator for a long time, improve the surface quality of concrete, no surface air bubbles or honeycomb pockmarks, no need for surface repair, and can realistically present the texture of the formwork surface Or modeling, which increases the freedom of structural design, does not require vibration, and can cast structures with complex shapes, thin walls and dense reinforcement, avoiding the wear of the formwork caused by vibration, reducing the wear of the concrete on the mixer, and reducing the The overall cost of the project can be reduced by increasing the construction speed, limiting environmental noise, reducing labor and ensuring quality, and using waste ceramics instead of natural aggregates to prepare regenerated self-compacting concrete technology, which is very suitable for the theme of environmental protection and energy saving in the building system advocated now. , has obvious environmental benefits, economic benefits and social benefits, especially can effectively strengthen the compressive strength, density, splitting tensile strength, flexural strength and elastic modulus and other indexes.

The present invention is also characterized in that the crushed stones are fine crushed stone aggregates and coarse crushed stone aggregates prepared in a ratio of 1:9. In this way, the fine crushed stone aggregate and the coarse crushed stone aggregate form the best filling ratio, and enough fine crushed stone aggregate can be filled between the coarse crushed stone aggregates to achieve higher compactness and form a more high-strength concrete products.

The present invention is also characterized in that the self-compacting concrete also includes fly ash floating beads. In this way, self-compacting concrete has good properties such as high temperature resistance, heat insulation, and fire prevention, and can replace additional materials such as high temperature resistance, heat insulation, and fire prevention, and effectively reduce costs.

The present invention is also characterized in that the self-compacting concrete also includes alkaline activated fly ash floating beads. In this way, it has the characteristics of light weight, hollow, temperature resistance and low price, and can greatly improve the mechanical properties and work performance of concrete.

The present invention is also characterized in that the self-compacting concrete also includes fly ash float beads and alkaline activated fly ash float beads. In this way, self-compacting concrete has good properties such as high temperature resistance, heat insulation, fire prevention, hollowness, and light weight, and can replace additional materials such as high temperature resistance, heat insulation, and fire prevention, and effectively reduce costs.

The present invention is also characterized in that the self-compacting concrete includes 100 parts of cement; 60-100 parts of fly ash; 20-50 parts of sawdust, 100-200 parts of gravel, 1-5 parts of polycarboxylate Adhesive 0.001-0.08 parts, defoamer 0.001-0.1 parts, silica fume 20-30 parts, quartz powder 27-42 parts, quartz sand 100-120 parts, superplasticizer 0.4-1 parts, pebbles 130-150 parts And gravel 130-150 parts. In this way, the concrete can be well compacted and the production efficiency can be effectively improved. Since no vibration is required, the time required for concrete pouring is greatly shortened, the labor intensity of workers is greatly reduced, and the number of workers required can be reduced, which can greatly improve the working environment and safety. High performance, no vibration noise, avoid arm vibration syndrome caused by workers holding the vibrator for a long time, improve the surface quality of concrete, no surface air bubbles or honeycomb pockmarks, no need for surface repair, and can realistically present the texture of the formwork surface Or modeling, which increases the freedom of structural design, does not require vibration, and can cast structures with complex shapes, thin walls and dense reinforcement, avoiding the wear of the formwork caused by vibration, reducing the wear of the concrete on the mixer, and reducing the The overall cost of the project can be reduced from many aspects such as increasing construction speed, environmental noise restrictions, reducing labor and ensuring quality. The use of fine aggregates such as quartz powder and quartz sand can effectively improve the durability of concrete and improve the fire resistance of concrete. , corrosion resistance, insulation, and the use of wood chips to prepare recycled self-compacting concrete technology, which is very suitable for the environmental protection and energy saving theme of the building system advocated now, has obvious environmental benefits, economic benefits and social benefits, especially can effectively strengthen the anti-segregation ability , crack resistance, compressive strength, density, splitting tensile strength, flexural strength and elastic modulus and other indices.

The present invention is also characterized in that the pebbles and crushed stones are mixed in a weight ratio of 1:1. In this way, the best mix of coarse aggregate is formed, and the pumpability of the concrete is the best, resulting in a higher density concrete and a higher strength concrete product.

The present invention is also characterized in that the self-compacting concrete also includes fly ash floating beads. In this way, self-compacting concrete has good properties such as high temperature resistance, heat insulation, and fire prevention, and can replace additional materials such as high temperature resistance, heat insulation, and fire prevention, and effectively reduce costs.

The present invention is also characterized in that the self-compacting concrete also includes alkaline activated fly ash floating beads. In this way, it has the characteristics of light weight, hollow, temperature resistance and low price, and can greatly improve the mechanical properties and work performance of concrete.

The present invention is also characterized in that the self-compacting concrete also includes fly ash float beads and alkaline activated fly ash float beads. In this way, self-compacting concrete has good properties such as high temperature resistance, heat insulation, fire prevention, hollowness, and light weight, and can replace additional materials such as high temperature resistance, heat insulation, and fire prevention, and effectively reduce costs.

(4) Description of drawings

Fig. 1 is one of the structural schematic diagrams of the expanded metal mesh of the present invention.

Fig. 2 is the second structural schematic diagram of the expanded metal mesh of the present invention.

Fig. 3 is one of the structural schematic diagrams of the combination of expanded metal mesh and module components in the present invention.

Fig. 4 is the second structural schematic diagram of the combination of expanded metal mesh and module components in the present invention.

Fig. 5 is a structural schematic diagram of two expanded metal mesh composite structures arranged at intervals according to the present invention.

Fig. 6 is a schematic diagram of the structure of two steel mesh combined structures arranged at intervals and cast-in-situ self-compacting concrete poured thereon.

Fig. 7 is one of the structural schematic diagrams of the modular components of the present invention.

Fig. 8 is the second structural schematic diagram of the modular component of the present invention.

Fig. 9 is the third schematic diagram of the structure of the modular component of the present invention.

Fig. 10 is a fourth schematic view of the structure of the modular component of the present invention.

Fig. 11 is the fifth schematic diagram of the structure of the modular component of the present invention.

Fig. 12 is the third schematic diagram of the structure of the expanded metal mesh of the present invention.

Fig. 13 is the fourth schematic diagram of the structure of the expanded metal mesh of the present invention.

Fig. 14 is a structural schematic diagram of two pieces of steel mesh sandwiching a module component of the present invention and pouring in-situ self-compacting concrete on it.

(5) Specific implementation methods

The present invention will be further described below in conjunction with embodiment.

The embodiment of the present invention, the manufacturing method of formwork hollow wall, is characterized in that: (1) preparing self-compacting concrete, fully stirring; (2) laying a layer of steel mesh 1; Vertically or obliquely connecting steel bars 2; (4) setting another layer of steel mesh 1 at the other end of the pulling steel bars 2; (5) setting a support bar perpendicular to it between the steel mesh 1 to support two layers of steel mesh Forming a combined formwork structure; (6) Supporting formwork on both sides of the combined formwork structure; (7) Pouring prepared self-compacting concrete in the formwork; (8) Disassembling the formwork after curing to obtain a formed formwork hollow wall structure. Figures 1-2 and 5-6 are schematic diagrams of the implementation steps of the method of Embodiment 1. As shown in Figure 1-2, select the style of expanded metal mesh according to the needs, lay a layer of expanded metal mesh 1 first, and set reinforcing ribs 5 in weak areas such as bent expanded metal mesh. As shown in FIG. 5 , another expanded metal mesh is arranged at intervals relative to one expanded metal mesh. As shown in Figure 6, two expanded metal meshes are arranged at intervals to form a composite structure, and self-compacting concrete is poured on both sides of the composite member, and then removed from the mold after curing to obtain a molded mesh wall structure.

The present invention also lies in adding a step after step (1): (a) hanging at least one modular component 4 on the expanded metal 1 , followed by steps (2)-(6). Figures 1-4 and 14 are schematic diagrams of the implementation steps of the method of Embodiment 1. As shown in Figure 2-3, you can choose modular components 4 with different structures according to your needs, hang the modular components 4 on the steel mesh 1 through the tie connectors 2, and connect the tie with various tie connectors 2 on the steel mesh The modular member 4, the connector 2 can also be an X-type tie connector 2a, an s-type tie connector 2b, a groove-shaped tie connector 2c, etc., and a groove-shaped steel e can also be set on the steel plate as shown in Figure 5 , the tie connector 2 is fixed on the channel steel e to tie the module member 4 . As shown in Figure 14, two steel meshes are arranged at intervals, and the tundish sandwiches the module member 4, and then the self-compacting concrete is poured on the outer support form of the steel mesh, and then the hollow wall structure is obtained by curing and demoulding.

The present invention also lies in that said modular component 4 is an open hollow tube, a closed hollow tube, a bamboo tube, a solid tube, an open box, a closed box or a solid block. As shown in FIG. 7, the module component 4 is a monolithic integral solid lightweight box-shaped component 4a. As shown in FIG. 8 , the module component 4 is a fully enclosed hollow box-shaped component 4 b. As shown in FIG. 9 , the modular component 4 is a group component 4c formed by connecting four lightweight box-shaped components with fully-enclosed outer walls through connectors. As shown in Fig. 10, the module component 4 is a hard thin-walled fully enclosed hollow tube 4d. As shown in Fig. 11, the module component 4 is a hard thin-walled fully enclosed bamboo tube 4e.

The present invention also lies in that the surface of the expanded metal mesh 1 is wavy, broken line or curved. As shown in Figure 1, the surface of the expanded metal mesh 1 is arranged in a wavy composite shape. As shown in Figure 2, the surface of the expanded metal mesh 1 is arranged in a combination of broken lines and waves. The broken steel sheet a is bent into a wave shape, and the broken steel sheet a and the connecting steel sheet b are arranged in a broken line. Reinforcing ribs 5 are also arranged between the steel sheets b.

The present invention also lies in that reinforcing ribs 5 are provided at the bending parts of the corrugated, broken line or curved steel mesh 1 . As shown in FIG. 2 , reinforcing ribs 5 are provided at the bending line between the broken steel sheet a and the connecting steel sheet b on the expanded metal mesh 1 , and the reinforcing ribs 5 are reinforcing ribs arranged along the bending position.

The present invention also lies in that the self-compacting concrete 3 building formwork mesh combination structure includes at least two layers of steel mesh 1 . As shown in Figure 3, it includes two steel meshes 1 arranged at intervals, the upper and lower parts of the steel mesh 1 are provided with a fixed positioning groove e, and the opening of the fixed positioning groove e is provided with an extension edge extending into the groove. The relative position of the expanded metal 1 is provided with a fixed positioning groove e with opposite openings, and the expanded metal 1 can also be connected and fixed on the fixed positioning groove e by bending steel bars f (2a, 2b, 2c), etc., and it is used to fix the two steel plates The effect of the relative position of net 1.

The present invention also lies in that the above-mentioned expanded metal meshes 1 are arranged at intervals. As shown in FIG. 3 , two expanded metal meshes 1 are arranged at intervals.

The present invention also lies in that the distance between the expanded metal meshes 1 is ≤350mm.

The present invention also lies in that the distance between the expanded metal meshes 1 is ≤100mm.

The present invention also lies in that at least two expanded metal meshes 1 are connected as a whole through the positioning connection device 2 thereon. As shown in Figure 14, the curved steel plates on both sides of the two steel meshes 1 are provided with a positioning connection device 2, the positioning connection device 2 is a bolt, and the two steel meshes 1 are fixed and positioned by bolts, and the two steel meshes can be adjusted arbitrarily through the bolts. The spacing between the steel mesh 1, and can also only adjust the spacing on one side.

The present invention also lies in that the expanded metal mesh 1 is bent into an angle of 45°-90°. As shown in FIG. 12 , the expanded metal mesh 1 is bent at an angle of 90°, and the bent part is a solid steel plate part, and the bent part can also be a hollow steel plate part.

The present invention also lies in that the expanded metal mesh 1 is a curved expanded metal mesh. As shown in Fig. 13, the expanded metal 1 is a curved expanded metal, and there are curved steel sheets pressed out by groove-shaped indentations regularly arranged vertically and horizontally on the steel plate.

The present invention also lies in that the composite structure of concrete building formwork and mesh is provided with multiple layers of arc-shaped steel mesh arranged closely or at intervals. The curved steel mesh as shown in Figure 13 can be arranged closely or at intervals.

The present invention also lies in that the surface of the self-compacting concrete 3 building formwork mesh combination structure is provided with a lightweight composite board 5 . As shown in FIG. 14 , the surface of the wall structure is provided with lightweight composite panels 5 , and fixed connection devices 2 are provided on the steel plates on both sides of the expanded metal mesh 1 to be able to connect and fix the outer lightweight composite panels 5 .

The present invention also lies in that the lightweight composite board 6 is a fiber cement board, wire mesh cement board, plastic board, fireproof board, lightweight lime board or cement mortar layer. As shown in Figure 13, the lightweight composite board 6 is a fiber cement board.

The present invention is also characterized in that the self-compacting concrete includes 100 parts of cement; 60-100 parts of fly ash; 20-50 parts of broken porcelain particles, 100-200 parts of gravel, and 1-5 parts of polycarboxylate superplasticizer , 0.001-0.08 parts of tackifier, 0.001-0.1 part of defoamer, 280-360 parts of machine-made sand and 0.4-1 part of superplasticizer.

The present invention is also characterized in that the crushed stones are fine crushed stone aggregates and coarse crushed stone aggregates prepared in a ratio of 1:9.

The present invention is also characterized in that the self-compacting concrete also includes fly ash floating beads.

The present invention is also characterized in that the self-compacting concrete also includes alkaline activated fly ash floating beads.

The present invention is also characterized in that the self-compacting concrete also includes fly ash float beads and alkaline activated fly ash float beads.

The present invention is also characterized in that the self-compacting concrete includes 100 parts of cement; 60-100 parts of fly ash; 20-50 parts of sawdust, 100-200 parts of gravel, 1-5 parts of polycarboxylate Adhesive 0.001-0.08 parts, defoamer 0.001-0.1 parts, silica fume 20-30 parts, quartz powder 27-42 parts, quartz sand 100-120 parts, superplasticizer 0.4-1 parts, pebbles 130-150 parts And gravel 130-150 parts.

The present invention is also characterized in that the pebbles and crushed stones are mixed in a weight ratio of 1:1.

The present invention is also characterized in that the self-compacting concrete also includes fly ash floating beads.

The present invention is also characterized in that the self-compacting concrete also includes alkaline activated fly ash floating beads.

The present invention is also characterized in that the self-compacting concrete also includes fly ash float beads and alkaline activated fly ash float beads.

When the present invention is implemented, a layer of steel mesh is laid first, and then vertical or oblique tension reinforcement bars are arranged on the steel mesh, or fixed positioning grooves are also arranged on the steel mesh, and then another end of the tension reinforcement is arranged on the steel mesh. A layer of steel mesh, also set fixed positioning grooves on the corresponding parts of the steel mesh installed later, in which steel bars, pipelines or wire boxes can be laid, and then vertical support rods are set between the steel mesh to support the two Layer steel mesh forms a combined formwork structure, and a mandrel can also be set between the formworks, and then formwork is supported on both sides of the combined formwork structure, and self-compacting concrete is poured in the formwork, and finally the formwork is disassembled after curing to obtain a formed formwork Hollow wall structure.

Claims (18)

1. the preparation method of formwork mesh hollow wall is characterized in that:

(1) preparation self-compacting concrete; Self-compacting concrete comprises 100 parts of cement, flyash 60-100 part, broken porcelain particle 20-50 part, rubble 100-200 part, polycarboxylate water-reducer 1-5 part, 0.001～0.08 part of tackifier, antifoaming agent 0.001-0.1 part, machine-processed sand 280-360 part and super plasticizer 0.4-1 part; Self-compacting concrete also includes the alkaline activation fly ash float, fully stirs;

(2) lay one deck expanded metal lath;

(a) select the pattern of expanded metal lath as required, lay one deck expanded metal lath (1) earlier, reinforcing rib (5) is set in the crooked weak area of expanded metal lath;

(b) expanded metal lath (1) surface is that broken line shape and waveform combined shaped are arranged, fracture steel disc (a) bends to waveform, and fracture steel disc (a) with is connected steel disc (b) and becomes the setting of broken line shape, the steel disc (a) that ruptures also is provided with reinforcing rib (5) with being connected between the steel disc (b);

(c) on expanded metal lath, hang at least one modular structure;

(3) the vertical or oblique with it reinforcing bar that sockets is set on expanded metal lath;

(4) at an other end that sockets reinforcing bar another layer expanded metal lath is set;

(5) vertical with it they sup-port two-layered steel plates net is set and forms combined lay wire structure between expanded metal lath;

(6) formwork on combined lay wire structure both sides;

(7) self-compacting concrete that cast prepares in template;

(8) dismantle the formwork mesh hollow wall structure that template obtains moulding after the maintenance.

2. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that described modular structure is open hollow pipe, closed hollow pipe, ring pipe, solid tubes, opening box, enclosure or solid slug.

3. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that described expanded metal lath surface is broken line shape or shaped form.

4. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that described expanded metal lath surface is waveform.

5. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that the bending part of described waveform, broken line shape or shaped form expanded metal lath is provided with reinforcing rib.

6. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that being laid with two-layered steel plates net at least.

7. the preparation method of formwork mesh hollow wall according to claim 6 is characterized in that described expanded metal lath is provided with at interval.

8. the preparation method of formwork mesh hollow wall according to claim 6 is characterized in that described expanded metal lath spacing distance≤350mm.

9. the preparation method of formwork mesh hollow wall according to claim 6 is characterized in that described expanded metal lath spacing distance≤100mm.

10. the preparation method of formwork mesh hollow wall according to claim 6 is characterized in that at least two expanded metal laths are connected to an integral body through the locating connector on it.

11. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that described expanded metal lath bends to 45 °～90 ° angle.

12. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that described expanded metal lath is the curved plate net.

13. the preparation method of formwork mesh hollow wall according to claim 12 is characterized in that being provided with in the preparation method of described formwork mesh hollow wall multilayer closely or the curved plate net that is provided with at interval.

14. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that the surface of the preparation method of self-compaction formwork mesh hollow wall is provided with light composite board.

15. the preparation method of formwork mesh hollow wall according to claim 14 is characterized in that described light composite board is fiber cement board, wire gauze cement board, plastic plate, PLASTIC LAMINATED, lightweight lime plate or cement sand bed.

16. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that described rubble is that fine stone gathers materials and coarse crushing stone gathers materials in ratio preparation in 1: 9.

17. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that described self-compacting concrete also includes fly ash float.

18. the preparation method of formwork mesh hollow wall according to claim 1 is characterized in that described self-compacting concrete also includes fly ash float and alkaline activation fly ash float.

Images